Can drinking too much chamomile tea be bad if you have menstrual cramps ?

What is "too much"?: Too much of anything is possibly harmful.Tea can be brewed weak to strong, but I do not know of danger in drinking 3-4 cups of strong chamomile tea a day.

Chamaemelum nobile: Roman (also called english) chamomile (chamaemelum nobile) can be beneficial for reducing symptoms of both premenstrual syndrome & for menstrual cramps. The major issue you may face if drinking large amounts of chamomile is possible sedation. It should be avoided when taking blood thinners or when pregnant. People w ragweed allergies can sometimes also be allergic to chamomile.